[Go] Add fragments dynamically

This chapter is translated from "beginning-android-4-application-development", if there is a place where translation is inappropriate, please note.

Original book purchase address http://www.amazon.com/Beginning-Android-4-Application-Development/dp/1118199545/

The real use of fragment is to add dynamically during the program's run.

1. New project.

2. Res/layout/main.xml

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1. <?xml version="1.0" encoding="Utf-8"?>
2. <linearlayout xmlns:android="Http://schemas.android.com/apk/res/android"
3. Android:layout_width="Fill_parent"
4. android:layout_height="Fill_parent"
5. android:orientation="Horizontal" >
7. </LinearLayout>

3. Res/layout/fragment1.xml

[Java]View Plaincopy

2. <?xml version="1.0" encoding="Utf-8"?>
4. <linearlayout xmlns:android="Http://schemas.android.com/apk/res/android"
6. Android:layout_width="Fill_parent"
8. android:layout_height="Fill_parent"
10. android:background="#00FF00"
12. android:orientation="vertical" >
16. <textview
18. android:id="@+id/lblfragment1"
20. Android:layout_width="Fill_parent"
22. android:layout_height="Wrap_content"
24. android:text="This is fragment #1"
26. android:textcolor="#000000"
28. android:textsize="25sp"/>
32. </LinearLayout>

4. Res/layout/fragment2.xml

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2. <?xml version="1.0" encoding="Utf-8"?>
4. <linearlayout xmlns:android="Http://schemas.android.com/apk/res/android"
6. Android:layout_width="Fill_parent"
8. android:layout_height="Fill_parent"
10. android:background="#FFFE00"
12. android:orientation="vertical" >
16. <textview
18. Android:layout_width="Fill_parent"
20. android:layout_height="Wrap_content"
22. android:text="This is fragment #2"
24. android:textcolor="#000000"
26. android:textsize="25sp"/>
30. </LinearLayout>

5. Fragment1.java

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2. Public class Fragment1 extends Fragment {
4. @Override
6. Public View Oncreateview (layoutinflater inflater, ViewGroup container,
8. Bundle savedinstancestate) {
10. //---Inflate the layout for this fragment---
12. return Inflater.inflate (R.layout.fragment1, container, false);
14. }
16. }

6. Fragment2.java

[Java]View Plaincopy

2. Public class Fragment2 extends Fragment {
4. @Override
6. Public View Oncreateview (layoutinflater inflater, ViewGroup container,
8. Bundle savedinstancestate) {
10. //---Inflate the layout for this fragment---
12. return Inflater.inflate (R.layout.fragment2, container, false);
14. }
16. }

7. Fragmentsactivity.java

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2. Public class Fragmentsactivity extends Activity {
4. /** Called when the activity is first created. * /
6. @Override
8. public void OnCreate (Bundle savedinstancestate) {
10. super.oncreate (savedinstancestate);
12. Setcontentview (R.layout.main);
16. Fragmentmanager Fragmentmanager = Getfragmentmanager ();
18. Fragmenttransaction fragmenttransaction = Fragmentmanager
20. . BeginTransaction ();
24. //---Get the current display info---
26. WindowManager wm = Getwindowmanager ();
28. Display d = wm.getdefaultdisplay ();
30. if (d.getwidth () > D.getheight ()) {
32. //---landscape mode---
34. Fragment1 fragment1 = new Fragment1 ();
36. //Android. R.id.content refers to the content
38. //View of the activity
40. Fragmenttransaction.replace (Android. R.id.content, Fragment1);
42. } Else {
44. //---portrait mode---
46. Fragment2 Fragment2 = new Fragment2 ();
48. Fragmenttransaction.replace (Android. R.id.content, Fragment2);
50. }
52. //---Add to the back stack---
54. Fragmenttransaction.addtobackstack (null);
56. Fragmenttransaction.commit ();
60. }
64. }

8. Commissioning.

[Go] Add fragments dynamically